ink: Fixing native library for x64 builds

I was able to build and run monochrome_bundle, and was able to draw on a
screenshot with this change.

Change-Id: I0e6e988f565d008a068fb2785c55cdc13ae66f81
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2140060
Auto-Submit: Sam Maier <smaier@chromium.org>
Commit-Queue: Jeffrey Cohen <jeffreycohen@chromium.org>
Reviewed-by: Jeffrey Cohen <jeffreycohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757089}

chrome/android/modules/image_editor/image_editor_module.gni

@@ -20,7 +20,7 @@ image_editor_module_desc = {
   java_deps = [ "//chrome/android/modules/image_editor/internal:java" ]
 
   if (enable_chrome_android_internal) {
-    if (target_cpu == "x86") {
+    if (target_cpu == "x86" || target_cpu == "x64") {
       loadable_modules_32_bit = [ "$_ink_dir/x86/libsketchology_native.so" ]
       loadable_modules_64_bit = [ "$_ink_dir/x86_64/libsketchology_native.so" ]
     } else {